Finding the Fourth Proportional to 124,061.48, 185,944.52 and 86,417.72

Step by Step Solution

1. Step 1: Write the proportion equation
   124,061.48 : 185,944.52 = 86,417.72 : x
2. Step 2: Convert to fraction form
   124,061.48/185,944.52 = 86,417.72/x
3. Step 3: Cross multiply
   124,061.48x = 185,944.52 × 86,417.72
4. Step 4: Simplify right side
   124,061.48x = 16,068,901,464.89
5. Step 5: Solve for x
   x = 16,068,901,464.89/124,061.48
6. Step 6: Final answer
   x = 129,523.70